https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46032
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
and GOMP_task (fn1, data1, fn2, ...) performs:
if (somecond)
{
if (fn2 == 0)
fn1 (data1);
else
{
void *buf = alloca (...); // Takes care also about alignment
fn2 (buf, data1);
fn1 (buf);
}
}
else
{
void *buf = malloc (...); // Takes care also about alignment
if (fn2 == 0)
memcpy (buf, data1, ...);
else
fn2 (buf, data1);
// Arrange for fn1 (buf); to be called at some point later (like C++
futures)
}
The purpose of fn2 is to run copy constructors of the vars, for vars that will
be residing within the buf.
